Air delivery device



A. R. GILBERT AIR DELIVERY DEVICE March 7, 1950 Filed 00%;. 7, 1946 2 Sheets-Sheet l JlfredR Gilbert,

March 7, 1950 A. R. GILBERT AIR DELIVERY DEVICE 2 Sheets-Sheet 2 Filed Oct. 7, 1946 Gilbert;

Patented Mar. 7, 1 950 UNI TEESD S TATES PATENT F FI CE AIR-DELIVERY DEVICE Alfred Gilbert, New York, -N. Y., assignor-to AnemostatCor-poration of America, New York, N.'Y., :a-corporation of Delaware Application October 7, 1946, Serial No. 101,695

I 2 Claims.

This invention relates toventilating apparatus,

and has particular reference toimprovements in devices for effecting delivery of air into rooms or other enclosures.

More particularly, the invention relates to improvements in air delivery devices of the type comprising a plurality of open-ended members of different sizes disposed in spaced apart relationship to each other within one another to divide air flowing through the device into separate streams.

One special object of the invention is to provide the members of devices of the type mentioned with novel spacing elements so as greatly to facilitate obtaining their proper spaced apart relationship to one another during their assembly.

Another special object of the invention is :to provide simple, easily applied means for cooperation with the spacing elements to secure the members firmly and rigidly in assemblywith one another.

With the foregoing and other objects in view, which will become more fully apparent as the nature of the invention is better understood, the

same consists in an air delivery device embodying the novel features of construction, combination and arrangement of parts aswill behereinafter more fully described, illustrated in the accompanying drawings and defined in'the appended claims.

In the accompanying drawings, wherein like characters of reference denote corresponding parts in the difierentviews:

Fig. 1 is a-central, longitudinal section through an air deliverydevice'constructed in accordance with the invention.

Fig. 2 is a cross sectiononthe line '22'of Fig. 1.

Figs. 3, 4 and 5 are views similar to Fig. 1- illustrating alternative forms of the invention; and

Fig. 6 is :a horizontal section illustrating a detail of the invention.

Referring to the drawings in detail, it will be observed that the air delivery device chosen for purposes of illustrating the invention is of a well known general type comprising a plurality of open-ended, hollow, flaring members of different sizes disposed in spaced apart relationship to each other within one another to divide air flowing through the device into a;plurality of separate, flaring streams and thereby cause it to be diffused and to be delivered from the device substantially draftlessly. It is to be understood,

however, that the features comprising the in.-

most member [6, an innermostmem'ber I] and two intermediate "members 12, I2. It is understood, however, that the number ofmembers comprising the device is :arbitrary. It.;is also to be understood that the members may have either the same or different amounts of -flare, or no :flare at-all, and that theymay-be of either regular or irregular shape in cross section, depending upon just how "it maybe desired to ;.have the separate air streams flow through and from the device in particular instances. Further it is to be understood that the members, whether flared or not, may be of circular or any other desired shape in end elevation and that the innermost member H may be either solid or hollow and, if hollow may beeither closed or open at its rear end as desired. Additionally "it is tobe understood that the outermost member 10 maybe provided at its rear end with a neck [3 to adapt the device for connectionwith an'air supply duct, or may be devoid of such a neck if, for example, a fan or the like is to begemployed simply for circulating room air through the device. The air to be delivered from the device is, of course, supplied to the device through the open, rear end of the larger or outermost member ID.

The present invention is particularly concerned, on the one hand, with the provision of simple, practical means to insure proper spacing of the members relative to each other during their assembly, and on the other hand, to the provision of simple, practical means for fastening said members securely together in their assembled relationship to each other, thereby to increase the production rate and, at the same time, to reduce the production'cost of the device.

To the end of 'providingsimple means to facilitate proper assembly ofthe members, said members are provided, at suitable'angularly spaced points, with suitable spacing "formations M. The members may be pressed, cast or otherwise formed from metal or they may be molded, pressed or otherwise formed from plastic or other suitable material and in that event the spacing formations [4 may be formed as integral parts of said members; :i. e., as bosses. Alternatively, the members maybe formedfrom sheet metal or other suitable sheet material and in that event the spacing formations I4 may be separate from and may be secured to the members in any suitable manner. In any event, the spacing formations are fixed parts of the members so that by the mere act of assembling the members they serve to space the members proper predetermined distances apart. As shown, said formations may be provided at the inner side of the outermost member 10, at the outer side of the innermost member I I and at both sides of the intermediate member or members l2, and between each two adjacent members they may be engageable in end to end relationship with each other to accomplish their spacing function. Further to accomplish their spacing function properly, the ends of said spacing formations are inclined forwardly and outwardly and may be either fiat, or dovetailed as indicated at M in Fig. 6, or otherwise similarly formed, so that they may be seated properly in end to end relationship to each other only when the flaring members are properly spaced apart and are angularly positioned with the said spacing formations in alinement with each other.

If the ends of the spacing formations are flat, it is easy to feel when the flaring members are properly positioned relative to each other and, consequently, easy to properly position said members relative to each other during their assembly without any necessity of employing jigs or other special spacing and supporting means for the members as heretofore required and used. If. on the other hand, the ends of said spacing formations are dovetailed or similarly formed to interfit with each other only by longitudinal movement of the members relative to each other and to thereby hold the members against rotation relative to each other, mere mating of the ends of said formations is all that is required to insure proper positioning of the members relative to each other.

The means for fastening the members together may consist as shown in Figs. 1 to 3 of the drawings, simply of headed screws l5 passed from the exterior of the outermost member Ill through alined holes in all except the innermost member In, and threaded at their inner ends into said innermost member.

Alternatively, screws [6 may be passed from the interior of the innermost member through alined holes in all except the outermost member and may be threaded at their outer ends into said outermost member as shown in Fig. 4 of the drawings. In either case the screws may be straight and rigid or they may be flexible, as indicated at I! in Fig. 5, if the holes in the respective members should not form a continuously straight passageway.

There may be as many of the screws [5, IE or I! as desired and they need not necessarily extend through the spacing formations l4. Preferably, however, they do extend through holes provided in said spacing formations as thereby a particularly firm and rigid assembly of the members is obtained. By the act of properly assembling the members as by feel or otherwise, the screw accommodating holes in said members become alined and it is easy to insert the screws in said holes.

Obviously, between any two members of a device of the type under consideration, the spacing formations may in some cases be entirely on one of the members instead of partly on one and partly on the other of the members.

Fig. 3 of the drawings illustrates that the outer of a plurality of members which are assembled as a unit in accordance with the present inv 11- tion may be provided with lugs or equival nt 5 spacing formations I8 for engagement with companion lugs or equivalent spacing formations 19 on an outermost member 20 to properly space the unit from said outermost member. This figure also illustrates that the unit may be removably fastened to the outermost member 20 by screws 2| extending loosely through the spacing formations I8 and threaded into spacing formations l9.

From the foregoing description considered in connection with the accompanying drawings it is believed that the features comprising the invention will be clearly understood and their advantages appreciated. It is desired to point out, however, that while only a single, specific embodiment of the invention has been illustrated and described, the same is readily capable of various other specifically different embodiments within its spirit and scope as defined in the appended claims. a

I claim:

1. An air delivery device comprising an outer open-ended hollow member, an inner member disposed within and spaced from said outer member, said members being separate from each other and having formations fixed with respect thereto and extending inwardly and outwardly therefrom, respectively, and disposed in end to end abutting relationship to each other to space said members apart, the abutting ends of said formations being inclined rearwardly and inwardly relative to the longitudinal axis of the device to limit rearward movement of said inner member relative to said outer member, the abutting ends of said formations also interfitting with each other to hold said members against rotation relative to each other about the longitudinal axis of the device.

2. An air delivery device comprising an outer open-ended hollow member, an inner member 45 disposed within and spaced from said outer member, said members being separate from each other and having formations fixed with respect thereto and extending inwardly and outwardly therefrom, respectively, and disposed in end to end abutting relationship to each other to space said members apart, the abutting ends of said formations being inclined rearwardly and inwardly relative to the longitudinal axis of the device to limit rearward movement of said inner member relative to said outer member, the abutting ends of said formations also having interfitting recess and projection formations to hold said members against rotation relative to each other about the longitudinal axis of the device.

ALFRED R. GILBERT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,495,405 Deyo Ma 27, 1924 2,216,420 Rose Oct. 1, 1940 D. 126,047 Kurth Mar. 25, 1941 2,316,541 Ahlberg Apr. 13, 1943 2,372,830 Honerkamp et al. Apr. 3, 1945 

